Advanced Micro Devices (AMD - Get Report) was upgraded to perform at Oppenheimer. Sales trends are improving and the company has less balance sheet risk, Oppenheimer said.

Anthem (ANTM - Get Report) was downgraded to neutral from overweight at JPMorgan. $132 price target. The company has a large insurance exchange footprint, as others are exiting the market, JPMorgan said.

Dunkin' Brands (DNKN - Get Report) was downgraded to sector perform from outperform at RBC Capital. $54 price target. The valuation is less attractive, as the stock is up 21% year-to-date, RBC said.

Ensco (ESV) was upgraded to market perform at BMO Capital. $8 price target. The valuation is more attractive, as the stock has underperformed its peers by 19% year-to-date, BMO said.

Groupon (GRPN - Get Report) was upgraded to outperform from neutral at Wedbush. $6.50 price target. The company will likely exceed quarterly expectations again, Wedbush said.

JPMorgan (JPM - Get Report) was downgraded to market perform from outperform at BMO Capital, based on its valuation.

Mobileye (MBLY) was downgraded to sell at TheStreet Ratings. You can view the full analysis from the report here: MBLY.

Newmont Mining (NEM - Get Report) was upgraded to overweight at Barclays. The company has multiple potential catalysts, Barclays said.

Natera (NTRA - Get Report) was upgraded to hold at TheStreet Ratings. You can view the full analysis from the report here: NTRA.

Qualys (QLYS - Get Report) was upgraded to buy from neutral at DA Davidson. $47 price target. The company should be able to reaccelerate growth and scale margins, Davidson said.

Time Warner (TWX) was downgraded to neutral from outperform at Wedbush. $90 price target. The valuation is less attractive, as the stock is up 23% year-to-date, Wedbush said.

Viacom (VIAB - Get Report) was upgraded to outperform from neutral at Wedbush. $46 price target. There's an increasing likelihood of a merger, Wedbush said.

Walgreens Boots Alliance (WBA - Get Report) was upgraded to buy from hold at Jefferies. New analyst has $95 price target. Fundamentals are strong and should be augmented by the Rite Aid deal, Jefferies said.

Wells Fargo (WFC - Get Report) was upgraded to market perform from underperform at BMO Capital. The stock is pricing in multiple risks from the recent scandal, BMO said.